﻿// MIT License (MIT)
// 
// Copyright (c) 2014 K Ercan Turkarslan
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
// 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Xml.Linq;

namespace MiosGenerator
{
    public static class XmlExtensions
    {
        #region XNode : GetAttributeValue, GetValue, GetChildren
        internal static String Attributes(this XNode xNode, String attrName)
        {
            var attrValue = ((XElement)xNode).Attributes(attrName).ToList();

            return attrValue.Any() ? attrValue.First().Value : null;
        }

        internal static String GetValue(this XNode xNode, String nodeName)
        {
            return ((XElement) xNode).Descendants()
                .Where(node => String.Equals(node.Name.LocalName, nodeName, StringComparison.CurrentCultureIgnoreCase))
                .Select(node => node.Value)
                .FirstOrDefault();
        }

        internal static IEnumerable<XNode> GetChildren(this XElement xElement, String nodeName)
        {
            return xElement.Elements()
                            .Where(node => String.Equals(node.Name.LocalName, nodeName, StringComparison.CurrentCultureIgnoreCase))
                            .Nodes();
        }
        #endregion

        #region XElement : GetNode, GetChildren

        internal static XElement GetNode(this XElement xElement, String nodeName)
        {
            return xElement.Descendants()
                                        .Where(node => String.Equals(node.Name.LocalName, nodeName, StringComparison.CurrentCultureIgnoreCase))
                                        .Select(node => node)
                                        .FirstOrDefault();                               
        }

        internal static IEnumerable<XNode> GetChildren(this XNode xNode, String nodeName)
        {
            return ((XElement)xNode).GetChildren(nodeName);
        }
        #endregion

        #region XDocument : TryParse

        internal static XDocument TryParse(String xmlContent)
        {
            try
            {
                return XDocument.Parse(xmlContent);
            }
            catch (System.Xml.XmlException)
            {
                return null;
            }
        }

        #endregion
    }
}
